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Question: Answered & Verified by Expert
In dispersion without deviation
PhysicsRay OpticsJEE Main
Options:
  • A The emergent rays of all the colours are parallel to the incident ray
  • B Yellow coloured ray is parallel to the incident ray
  • C Only red coloured ray is parallel to the incident ray
  • D All the rays are parallel, but not parallel to the incident ray
Solution:
1820 Upvotes Verified Answer
The correct answer is: Yellow coloured ray is parallel to the incident ray
Deviation is zero only for a particular colour, it is generally taken to be yellow.

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